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RT8172A
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Richtek Technology
RT8172A 데이터시트 - Richtek Technology
Richtek Technology
General Description
The RT8172A is a dual single-phase PWM controller with integrated MOSFET drivers, compliant with Intel IMVP7 Pulse Width Modulation Specification to support both CPU core and GPU core power. This part adopts G-NAVPTM (Green-Native AVP), which is Richteks proprietary topology derived from finite DC gain compensator in constant ontime control mode. The G-NAVPTM makes this part an easy setting PWM controller to meet all Intel AVP (Active Voltage Positioning) mobile CPU/GPU requirements. The RT8172A uses SVID interface to control an 8-bit DAC for output voltage programming.
Features
• Dual Single-Phase PWM Controller for CPU Core
and GPU Core Power
• IMVP7 Compatible Power Management States
• Serial VID Interface
• G-NAVPTM Topology
• AVP for CPU VR Only
• 0.5% DAC Accuracy
• 0.8% System Accuracy
• Differential Remote Voltage Sensing
• Built-in ADC for Platform Programming
► SETINI/SETINIA for CPU/GPU Core VR Initial
Startup Voltage
► TMPMAX to Set Platform Maximum Temperature
► ICCMAX/ICCMAXA for CPU/GPU Core VR
Maximum Current
• Power Good Indicator : VR_READY/VRA_READY for
CPU/GPU Core Power
• Thermal Throttling Indicator : VRHOT
• Diode Emulation Mode at Light Load Condition
• Fast Line/Load Transient Response
• Switching Frequency up to 1MHz per Phase
• OVP, UVP, NVP, OTP, UVLO, OCP
• RoHS Compliant and Halogen Free
Applications
• IMVP7 Intel CPU/GPU Core Power Supply
• Laptop Computers
• AVP Step-Down Converter
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